Watford Electronics Solderless 12 ROM board

In January 2011, I was having problems with some floppy discs but I didn't realise at the time and thought that it was the floppy disc controller which was an 8271 at the time. In the end, because I was tearing my hair out trying to debug the board, I sent my machine to Mark at RetroClinic and he confirmed that there was nothing wrong and it turned out I had a batch of 25 or so faulty floppy discs.... So, to turn what ended up being a wasted journey for my Beeb into something a little bit more interesting, I asked Mark to fit the 1770 controller and the